Spirale
f870a1b224
新增 go/testing/slice/slice_test.go，验证将 slice 作为参数传入函数并在函数内 append 时不会影响原 slice 的 len/cap，借此说明 slice 值传递时的扩容行为。
19 lines
340 B
Go
19 lines
340 B
Go
package main
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import (
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"fmt"
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"testing"
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)
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func appendSlice(s []int, n int) {
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s = append(s, n)
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fmt.Printf("len=%d,cap=%d\n", len(s), cap(s))
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}
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func TestSliceAppend(t *testing.T) {
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s1 := make([]int, 5)
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appendSlice(s1, 10)
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if len(s1) != 5 || cap(s1) != 5 {
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t.Errorf("Expected len=5, cap=5; got len=%d, cap=%d", len(s1), cap(s1))
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}
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}
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